FIRST_TIME_MOUNT in startup-script.sh not set causing NameNode to not be formatted.

[jkpchang]

Hi.. I noticed that the NameNode is not started properly in the Hadoop master log file, because it's not formatted.. I dug deeper.. turns out that in startup-script.sh, there's this:

if (( $FIRST_TIME_MOUNT )) ; then
run_as_hadoop "Failed to format HDFS"
"echo 'Y' | hadoop namenode -format"
fi

Where is FIRST_TIME_MOUNT set?